X64: Convert smis to holding 32 bits of payload.

src/execution.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 78 matching lines @@
   }
 
   {
     // Save and restore context around invocation and block the
     // allocation of handles without explicit handle scopes.
     SaveContext save;
     NoHandleAllocation na;
     JSEntryFunction entry = FUNCTION_CAST<JSEntryFunction>(code->entry());
 
     // Call the function through the right JS entry stub.
-    value = CALL_GENERATED_CODE(entry, func->code()->entry(), *func,
-                                *receiver, argc, args);
+    byte* entry_address= func->code()->entry();
+    JSFunction* function = *func;
+    Object* receiver_pointer = *receiver;
+    value = CALL_GENERATED_CODE(entry, entry_address, function,
+                                receiver_pointer, argc, args);
   }
 
 #ifdef DEBUG
   value->Verify();
 #endif
 
   // Update the pending exception flag and return the value.
   *has_pending_exception = value->IsException();
   ASSERT(*has_pending_exception == Top::has_pending_exception());
   if (*has_pending_exception) {
@@ skipping 578 matching lines @@
   // All allocation spaces other than NEW_SPACE have the same effect.
   Heap::CollectAllGarbage(false);
   return v8::Undefined();
 }
 
 
 static GCExtension kGCExtension;
 v8::DeclareExtension kGCExtensionDeclaration(&kGCExtension);
 
 } }  // namespace v8::internal